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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
OPERATING ACTIVITIES |  |
Net income | $ 4,888 | $ 9,954
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Depreciation and amortization | 25,409 | 25,352
Amortization of intangibles | 1,128 | 1,134
Pension settlement expense | 1,356 | 654
Share-based compensation expense | 2,058 | 1,870
Provision for losses on accounts receivable | 112 | 445
Deferred income tax benefit | (584) | (2,749)
Gain on sale of property and equipment | (43) | (221)
Changes in operating assets and liabilities: |  |
Receivables | 3,931 | (10,260)
Prepaid expenses | (5,760) | (2,587)
Other assets | 4,589 | 2,732
Income taxes | (4,313) | 1,938
Multiemployer pension fund withdrawal liability | (143) |
Accounts payable, accrued expenses, and other liabilities | (35,999) | 3,513
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES | (3,371) | 31,775
INVESTING ACTIVITIES |  |
Purchases of property, plant and equipment, net of financings | (15,543) | (7,177)
Proceeds from sale of property and equipment | 1,039 | 1,050
Purchases of short-term investments | (13,790) | (4,410)
Proceeds from sale of short-term investments | 4,998 | 6,245
Capitalization of internally developed software | (2,656) | (2,164)
NET CASH USED IN INVESTING ACTIVITIES | (25,952) | (6,456)
FINANCING ACTIVITIES |  |
Payments on long-term debt | (15,217) | (16,558)
Net change in book overdrafts | (2,524) | (2,572)
Payment of common stock dividends | (2,052) | (2,058)
Purchases of treasury stock | (2,663) | (201)
Payments for tax withheld on share-based compensation | (8) | (50)
NET CASH USED IN FINANCING ACTIVITIES | (22,464) | (21,439)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (51,787) | 3,880
Cash and cash equivalents at beginning of period | 190,186 | 120,772
CASH AND CASH EQUIVALENTS CASH AT END OF PERIOD | 138,399 | 124,652
NONCASH INVESTING ACTIVITIES |  |
Equipment financed |  | 121
Accruals for equipment received | 2,878 | $ 883
Lease liabilities arising from obtaining right-of-use assets | $ 18,144 |

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